Anterior neck muscles Flashcards by Gabrielle Otremba

platysma: proximal and distal attachments

proximal: inferior mandible border skin
subcutaneous tissue of the face

distal: pectoralis major
deltoid fascia

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platysma: innervation and blood supply

innervation: cervical branch of facial nerve CN VII

blood supply: facial artery
submental artery

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platysma - function

depress mandible
lower face skin
elevate neck skin when mouth closed

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sternocleidomastoid - proximal and distal attachments

proxmial: manubrium
proximal clavicle

distal: mastoid process
superior nuchal line

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sternocleidomastoid - innervation and blood supply

innervation: spinal accessory nerve CN XI

blood supply: occipital and superior thyroid arteries

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sternocleidomastoid - function

ipsilateral side bending
contralateral rotation
flexion
elevate thorax and shoulder

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stylohyoid - proximal and distal attachments

proximal: styloid process
distal: hyoid body

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stylohyoid - innervation and blood supply

innervation: facial nerve CN VII

blood supply: superior thyroid artery
lingual artery

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stylohyoid - function

hyoid elevation

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digastric - proximal and distal attachments

proximal: posterior belly: mastoid notch
anterior belly: inferior border of mandible closing to the symphysis

distal: common tendon on hyoid body

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digastric - innervation and blood supply

innervation
posterior belly - facial nerve CN VII
anterior belly - mylohyoid branch of trigeminal nerve CN V

blood supply:
posterior belly: occipital artery
anterior belly: facial artery

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digastric - function

hyoid elevation

retraction of mandible

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mylohyoid - proximal and distal attachments

proximal: mylohyoid line of mandible
distal: hyoid body and median raphe of bilateral mylohyoid

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mylohyoid - innervation and blood supply

innervation: mylohyoid branch of trigeminal nerve CN V3

blood supply: inferior alveolar artery

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mylohyoid - function

hyoid and floor of mouth elevation

mandible depression and retraction

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geniohyoid - proximal and distal attachments

proximal: mandibular inferior mental spine
distal: anterior hyoid body

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geniohyoid - innervation

innervation: C1 hiking through hypoglossal nerve

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geniohyoid - function

hyoid and floor of the mouth elevation
depression and retraction of mandible

same as mylohyoid

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sternohyoid - proximal and distal attachments

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proximal: posterior manubrium
clavicle
sternoclavicular ligament

distal: inferior border of hyoid

sternohyoid - innervation and blood supply

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innervation: ansa cervicalis (C1-C3)

blood supply: superior thyroid artery

sternohyoid - function

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hyoid and larynx depression

sternothyroid - proximal and distal attachments

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proximal: posterior surface of manubrium
distal: oblique line of thyroid cartilage

sternothyroid - innervation and blood supply

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innervation: ansa cervicalis

blood supply: superior thyroid artery

sternothyroid - function

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depression of thyroid cartilage and larynx

omohyoid - proximal and distal attachment

proximal: lower border of hyoid distal: suprascapular notch

omohyoid - innervation and blood supply

innervation: ansa cervicalis blood supply: lingual artery superior cervical artery infrahyoid artery

omohyoid - function

hyoid depression

thyrohyoid - proximal and distal attachment

proximal: oblique line of thyroid cartilage distal: lower body and greater horn of hyoid

thyrohyoid - innervation and blood supply

innervation: C1 hiking through hypoglossal nerve blood supply: superior thyroid artery

thyrohyoid - function

depression of hyoid | elevation of thyroid cartilage and larynx

anterior scalene - proximal and distal attachments

proximal: anterior tubercle of transverse process C3-C6 distal: scalene tubercle of 1st rib

anterior scalene - innervation and blood supply

innervation: ventral rami C4-C6 blood supply: ascending cervical artery

anterior scalene - function

neck ipsilateral side bending contralateral rotation flexion 1st rib elevation

middle scalene - proximal and distal attachments

proximal: posterior tubercle of transverse process c2-C7 distal: upper surface of rib 1

middle scalene - innervation and blood supply

innervation: ventral rami of spinal nerve C2-C8 blood supply: ascending cervical artery

middle scalene - function

neck ipsilateral side bending | 1st rib elevation

posterior scalene - proximal and distal attachment

proximal: posterior tubercle of transverse process C5-C7 distal: 2nd rib, occasional with middle scalene

posterior scalene - innervation and blood supply

innervation: ventral rami C6-C8 blood supply: ascending cervical artery

posterior scalene - function

neck ipsilateral side bend | 2nd (and 1st if merging with middle scalene) rib elevation

longus capitis - proximal and distal attachment

proximal: TP C3-C6 distal: basilar part of occipital bone

longus colli - proximal and distal attachment

proximal: superior - TP of C3-C5 inferior - bodies of T1-T3 vertical - bodies of T3-T5 distal: superior - anterior tubercle of C1 inferior - TP of C5-C7 vertical - bodies of C2-C4

rectus capitis anterior - proximal and distal attachments

proximal: anterior arch transverse process of C1 distal: occiput

rectus capitis lateralis - proximal and distal attachmetns

proximal: TP C1 distal: occiput

deep prevertebral flexors (longus capitis & colli, rectus capitis anterior & lateralis) - innervation

ventral rami of cervical nerves

deficit of the core neck muscles (longus capitis & colli, rectus capitis anterior & lateralis)

forward head: overstretch | weakness

Anterior neck muscles Flashcards

(45 cards)